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Companies House has filings which confirm that.
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The report doesn't mention who they sold YoYo Games to, but some investigative folks on the Game Maker forums noticed that employees at Opera, developers of reasonably popular browser software, have been appointed as YoYo Games directors. To see this content please enable targeting cookies. There's been no official announcement that this has changed, but a report on Reuters states that Playtech have sold YoYo Games for "about $10 million".
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Since 2015, its developers YoYo Games have been owned by gambling software creator Playtech. Game Maker is an entry-level game development tool which has been used to create several indie megahits, including Undertale, Hyperlight Drifter, Heat Signature and Katana Zero.
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